Variable

b

SE (b)

P value

OR

95% confidence interval of OR

Upper limit

lower limit

No fever before blood transfusion; fever after blood transfusion

1.759

0.536

0.001

5.809

2.032

16.962

Fever before blood transfusion

0.572

0.484

0.237

1.772

0.670

4.542

(3 - 6) preschool children

−0.047

0.655

0.943

0.954

0.275

3.831

(6 - 12) school age children

0.197

0.671

0.769

1.218

0.338

5.004

(12 - 18) adolescence

2.374

0.642

0.000

10.744

3.331

43.245

Delayed transfusion

1.438

0.500

0.004

4.212

1.581

11.422